Table 1. Descriptive statistics for all variables.
| Total sample | Boys | Girls | |||||||
|---|---|---|---|---|---|---|---|---|---|
| N | M (SD) or F (%) | Range | N | M(SD) or F (%) | Range | N | M(SD) or F (%) | Range | |
| BP: self-report | 298 | 1.40(0.73) | 0.00–3.63 | 135 | 1.38(0.73) | 0.00–3.44 | 163 | 1.41(0.73) | 0.00–3.63 |
| EP: self-report | 298 | 0.89(0.68) | 0.00–3.72 | 135 | 0.62(0.56) | 0.00–3.49 | 163 | 1.11(0.69) | 0.00–3.72 |
| BP: mother-report | 304 | 0.78(0.71) | 0.00–3.44 | 139 | 0.76(0.64) | 0.00–2.66 | 165 | 0.81(0.75) | 0.00–3.44 |
| EP: mother-report | 304 | 0.57(0.58) | 0.00–2.85 | 139 | 0.42(0.46) | 0.00–2.85 | 165 | 0.71(0.63) | 0.00–2.70 |
| Urbanicity | 323 | 2.52(1.34) | 0.00–4.00 | 149 | 2.50(1.31) | 0.00–4.00 | 174 | 2.54(1.37) | 0.00–4.00 |
| Heart rate (AUCi) | 275 | 4639.88(609.83) | 3332.21–7209.23 | 120 | 4559.99(635.19) | 3332.21–6387.10 | 155 | 4701.74(584.03) | 3388.44–7209.23 |
| Heart rate (MR) | 277 | 10.21(8.59) | -10.69–39.95 | 121 | 9.38(8.17) | -10.69–31.94 | 156 | 10.85(8.87) | -4.16–39.95 |
| Cortisol (AUCi) | 301 | 329.23(212.61) | 44.69–1580.98 | 133 | 364.40(249.67) | 73.73–1580.98 | 168 | 301.39(173.69) | 44.69–1103.10 |
| Cortisol (MR) | 300 | 1.08(3.39) | -9.44–13.94 | 132 | 1.46(3.68) | -8.07–10.93 | 168 | 0.79(3.12) | -9.44–13.94 |
| Cortisol (AUCg) | 267 | 7154.37(2524.03) | 616.35–15428.40 | 128 | 6574.87(2507.84) | 616.35–15428.40 | 139 | 7688.02(2427.66) | 2557.20–14043.90 |
| SES Employment | 323 | 0.17(0.86) | -3.40–2.07 | 149 | 0.24(0.85) | -3.04–2.07 | 174 | 0.12(0.88) | -3.40–1.76 |
| SES Income | 323 | 0.05(0.95) | -2.17–3.69 | 149 | 0.13(0.96) | -1.85–3.69 | 174 | -0.02(0.93) | -2.17–3.31 |
| Family SES (l/a/h) | 323 | 11/25/64 | 143 | 11/29/60 | 164 | 11/22/67 | |||
| Age | 323 | 17.07(1.51) | 13.00–20.83 | 149 | 17.15(1.36) | 13.00–20.83 | 174 | 17.01(1.62) | 13.00–20.67 |
| Sex (boy/girl) | 323 | 46/54 | |||||||
| Pubertal stage | 289 | 4.34(0.68) | 2.00–5.00 | 137 | 4.26(0.67) | 2.00–5.00 | 152 | 4.42(0.68) | 2.00–5.00 |
| Body mass index | 314 | 21.73(3.27) | 16.00–40.56 | 142 | 21.24(2.93) | 16.00–31.44 | 172 | 22.14(3.48) | 16.65–40.56 |
| TD exercise (y/n) | 323 | 16/84 | 149 | 85/15 | 174 | 84/16 | |||
| Season (sum/win) | 323 | 53/47 | 149 | 52/48 | 174 | 55/45 | |||
F = frequency; BP = behavioral problems; EP = emotional problems; AUCi = area under the curve with respect to increase; MR = maximum response; AUCg = area under the curve with respect to ground; SES = socioeconomic status; l/a/h = low/average/high; TD = test day; y/n = yes/no; sum/win = spring and summer/autumn and winter; urbanicity, SES employment and SES income were measured at the neighborhood level.